How to Get Twitter Profile information From iPhone Settings in iOS

-(void)getTwitterSettingsInfo

{

    ACAccountStore *accountStore = [[ACAccountStore alloc] init] ;

    

    ACAccountType *twitterAccountType =  [accountStore accountTypeWithAccountTypeIdentifier:ACAccountTypeIdentifierTwitter];

    NSArray *twitterAccounts = [accountStore accountsWithAccountType:twitterAccountType];

    if([twitterAccounts count] > 0)

    {

        ACAccount *twitterAccount = [twitterAccounts objectAtIndex:0];

        

        NSString *twitterUserName = twitterAccount.username;

        twillterUserLabel.text = twitterUserName;

        

        if(twitterIdentifier == 10) //Getting iamge if Identfier = 10

        {

            NSError *error;

            NSString * requestString = [NSString stringWithFormat:@"https://api.twitter.com/1.1/users/show.json?screen_name=%@", twitterUserName];

            NSURL *verify = [NSURL URLWithString:requestString];

            NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:verify];

            [[PFTwitterUtils twitter] signRequest:request];

            NSURLResponse *response = nil;

            NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];

            

            if ( error == nil){

                NSDictionary* result = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:&error];

                NSLog(@"%@",result);

                

                NSString * requestString = [result objectForKey:@"profile_image_url_https"];

                

                NSURL *url = [NSURL URLWithString:requestString];

                NSData *imageData = [NSData dataWithContentsOfURL:url];

                [profilepicButton setBackgroundImage:[UIImage imageWithData:imageData] forState:UIControlStateNormal];

                twitterIdentifier = 0;

            }

        }

        

    }

    else

        twillterUserLabel.text = @"Undefined";

    

}